How many movies have Hidetsugu Ito and Takahiro Takamizawa collaborated on?

They have worked on 4 movies together! Their first movie together was Naruto Shippuden the Movie: The Will of Fire (2009) while their highest rated movie together was Boruto: Naruto the Movie (2015). They have not worked together since Boruto: Naruto the Movie (2015). They are most known for their animation films together.